Location: Heyfield. | Australian Soil Classification: Vertic, Mesonatric, Brown SODOSOL. |
Great Soil Group: Solodised solonetz. | Geology: Mid Pleistocene terrace. |
General Landscape Description: Level plain. | Mapping Unit: Stratford. |
Site Description: Grazing paddock. | Native Vegetation: Original vegetation included forest red gum (E. tereticornis). |
Site GP63 Landscape |
A1 | 0-2 cm | Dark brown (10YR3/3); fine sandy loam; pH 5.4; sharp change to: | Site GP63 Profile Note: Columnar structure in upper B horizon with associated bleached capping. |
A21 | 2-10 cm | Yellowish brown (10YR5/4); conspicuously bleached (7.5YR7/2d); fine sandy loam; massive structure; very firm consistence dry; pH 6.0; clear and wavy change to: | |
A22 | 10-15 cm | Pale Brown (10YR6/3); conspicuously bleached (10YR8/1d); fine sandy loam; massive very firm consistence dry; sharp change to: | |
Subsoil | |||
B1 | 15-25cm | Yellowish brown (10YR5/4) with a few (<10%) light yellowish brown (10YR5/8) mottles; light clay; moderate coarse columnar and prismatic, parting to strong coarse blocky structure; strong consistence dry; contains few (2%) sub-rounded manganese segregations (2-6 mm in size) as well as a few (<2%) quartz fragments (2-6 mm in size); pH 6.8; gradual change to: | |
B21 | 25-50 cm | Yellowish brown (10YR5/6) with a few (<10%) light yellowish brown (10YR5/8) mottles; medium clay; moderate coarse columnar and prismatic, parting to strong coarse blocky structure; strong consistence dry; contains a few (2-5%) sub-rounded manganese segregations (2-6 mm in size); pH 7.2; gradual change to: | |
B22 | 50-90 cm | Yellowish brown (10YR5/6); medium clay; moderate coarse prismatic, parting to strong coarse blocky structure; very firm consistence moist; contains a few (2%) sub-rounded manganese segregations (2-6 mm in size); pH 7.6; gradual change to: | |
B23 | 90+ cm | Light olive brown (2.5Y5/6); light clay; some lenticular structure and slickensides evident; very firm consistence moist; pH 7.9. |
Horizon | pH | Salinity Rating | ||
Surface (A1 horizon) | Strongly Acid | Moderate | Non-sodic | None |
Subsoil (B21 horizon) | Slightly Alkaline | Low | Strongly Sodic | Complete |
Deeper subsoil (at 90 cm) | Slightly Alkaline | Moderate | Strongly Sodic | Complete |
The surface soil is strongly acid. The subsoil is slightly alkaline. | The surface soil is non-sodic. he subsoil is strongly sodic throughout. | ||
The surface salinity rating is moderate. The subsoil rating is low becoming moderate at depth. | The clay content increases sharply at 25 cm depth. |
Horizon | Horizon Depth (cm) | pH (water) | pH (CaCl2) | EC 1:5 | NaCl | Exchangeable Cations | |||
Ca | Mg | K | Na | ||||||
meq/100g | |||||||||
A1 | 0-2 | 5.4 | 4.8 | 0.26 | <0.03 | 9.3 | 1.9 | 0.7 | 0.2 |
A21 | 2-10 | 6 | 5.3 | 0.18 | 4.7 | 1 | 0.17 | 0.51 | |
A22 | 10-15 | ||||||||
B1 | 15-25 | 6.8 | 5.9 | 0.12 | 2.8 | 3 | 0.11 | .073 | |
B21 | 25-50 | 7.2 | 6.3 | 0.22 | 3 | 7.9 | 0.2 | 2 | |
B22 | 50-90 | 7.6 | 6.7 | 0.41 | 0.08 | 0.9 | 7 | 0.2 | 2.7 |
B23 | 90+ | 7.9 | 7.1 | 0.55 | 0.1 | 0.8 | 8 | 0.2 | 3.4 |
Horizon | Horizon Depth (cm) | Exchangeable Aluminium mg/kg | Exchangeable Acidity meq/100g | Field Capacity pF2.5 | Wilting Point pF4.2 | Coarse Sand (0.2-2.0 mm) | Fine Sand (0.02-0.2 mm) | Silt (0.002-0.02 mm) | Clay (<0.002 mm) |
A1 | 0-2 | <10 | 12 | 13.2 | |||||
A21 | 2-10 | <10 | 3.1 | 5.7 | 7 | 41 | 34 | 13 | |
A22 | 10-15 | ||||||||
B1 | 15-25 | 6.9 | 9 | 37 | 32 | 21 | |||
B21 | 25-50 | 15.2 | 6 | 23 | 27 | 44 | |||
B22 | 50-90 | 13 | 8 | 29 | 27 | 37 | |||
B23 | 90+ | 14.8 | 4 | 23 | 30 | 42 |